99890627 has 2 divisors, whose sum is σ = 99890628.
Its totient is φ = 99890626.
The previous prime is 99890579. The next prime is 99890647. The reversal of 99890627 is 72609899.
It is a strong prime.
It is an emirp because it is prime and its reverse (72609899) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 99890627 - 26 = 99890563 is a prime.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (99890647) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49945313 + 49945314.
It is an arithmetic number, because the mean of its divisors is an integer number (49945314).
Almost surely, 299890627 is an apocalyptic number.
99890627 is a deficient number, since it is larger than the sum of its proper divisors (1).
99890627 is an equidigital number, since it uses as much as digits as its factorization.
99890627 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 489888, while the sum is 50.
The square root of 99890627 is about 9994.5298538751.
The cubic root of 99890627 is about 463.9896001311.
The spelling of 99890627 in words is "ninety-nine million, eight hundred ninety thousand, six hundred twenty-seven".